Finding the Fourth Proportional to 13,145.98, 19,725.12 and 5,749.48

Step by Step Solution

1. Step 1: Write the proportion equation
   13,145.98 : 19,725.12 = 5,749.48 : x
2. Step 2: Convert to fraction form
   13,145.98/19,725.12 = 5,749.48/x
3. Step 3: Cross multiply
   13,145.98x = 19,725.12 × 5,749.48
4. Step 4: Simplify right side
   13,145.98x = 113,409,182.94
5. Step 5: Solve for x
   x = 113,409,182.94/13,145.98
6. Step 6: Final answer
   x = 8,626.91